Level indicator device

Claim 1

A liquid level indicator device comprising a housing forming a reservoir adapted to retain a body of liquid, means on said housing forming a reference plane adapted to be positioned on a surface to be leveled, said housing having a top wall, a float within said reservoir having an upper face spaced from and below said top wall when said reference plane is horizontal, said float having a central electrical contact on the top face thereof, a central stud on said top wall projecting into said housing and engaging said central contact to make electrical connection therewith, said central stud cooperating with said contact to form a pivot point about which the float is universally pivotable in response to variations in the inclination of said reference plane, said float also having four electrical contacts thereon spaced from and about said central contact, electrical conductor means extending from each of the latter contacts to said central contact, two of said four contacts lying on a straight line passing through said central contact and the other two of said contacts also lying on a straight line passing through said central contact and perpendicular to said first-mentioned straight line, said top wall also having a plurality of four studs thereon aligned vertically with said four contacts, a series of four indicator bulbs, said central stud being electrically connected in common with each of said bulbs and a source of electrical energy, said four contacts being individually electrically connected, one with each of said four studs, all of said studs being formed of an electrically conductive material whereby when said housing is disposed in a position such that said reference plane is other than horizontal at least one of said four studs makes electrical contact with at least one of said four contacts to establish an electrical circuit through at least one of said indicator bulbs.